Uninstall old versions

Older versions of Docker were called docker, docker.io , or docker-engine.
If these are installed, uninstall them:

$ sudo apt-get remove docker docker-engine docker.io containerd runc

It’s OK if apt-get reports that none of these packages are installed.

The contents of /var/lib/docker/, including images, containers, volumes, and
networks, are preserved. The Docker CE package is now called docker-ce.

Install Docker CE

You can install Docker CE in different ways, depending on your needs:

Most users
set up Docker’s repositories and install
from them, for ease of installation and upgrade tasks. This is the
recommended approach, except for Raspbian.

Some users download the DEB package and
install it manually and manage
upgrades completely manually. This is useful in situations such as installing
Docker on air-gapped systems with no access to the internet.

In testing and development environments, some users choose to use automated
convenience scripts to install Docker.
This is currently the only approach for Raspbian.

Install using the repository

Before you install Docker CE for the first time on a new host machine, you need
to set up the Docker repository. Afterward, you can install and update Docker
from the repository.

Raspbian users cannot use this method!

For Raspbian, installing using the repository is not yet supported. You must
instead use the convenience script.

Use the following command to set up the stable repository. To add the
nightly or test repository, add the word nightly or test (or both)
after the word stable in the commands below. Learn about nightly and test channels.

Note: The lsb_release -cs sub-command below returns the name of your
Debian distribution, such as helium. Sometimes, in a distribution
like BunsenLabs Linux, you might need to change $(lsb_release -cs)
to your parent Debian distribution. For example, if you are using
BunsenLabs Linux Helium, you could use stretch. Docker does not offer any guarantees on untested
and unsupported Debian distributions.

Install Docker CE

Note: This procedure works for Debian on x86_64 / amd64, Debian ARM,
or Raspbian.

Update the apt package index.

$ sudo apt-get update

Install the latest version of Docker CE and containerd, or go to the next step to install a specific version:

$ sudo apt-get install docker-ce docker-ce-cli containerd.io

Got multiple Docker repositories?

If you have multiple Docker repositories enabled, installing
or updating without specifying a version in the apt-get install or
apt-get update command always installs the highest possible version,
which may not be appropriate for your stability needs.

To install a specific version of Docker CE, list the available versions in the repo, then select and install:

Verify that Docker CE is installed correctly by running the hello-world
image.

$ sudo docker run hello-world

This command downloads a test image and runs it in a container. When the
container runs, it prints an informational message and exits.

Docker CE is installed and running. The docker group is created but no users
are added to it. You need to use sudo to run Docker commands.
Continue to Linux postinstall to allow
non-privileged users to run Docker commands and for other optional configuration
steps.

Upgrade Docker CE

To upgrade Docker CE, first run sudo apt-get update, then follow the
installation instructions, choosing the new version you want
to install.

Install from a package

If you cannot use Docker’s repository to install Docker CE, you can download the
.deb file for your release and install it manually. You need to download
a new file each time you want to upgrade Docker.

Install Docker CE, changing the path below to the path where you downloaded
the Docker package.

$ sudo dpkg -i /path/to/package.deb

The Docker daemon starts automatically.

Verify that Docker CE is installed correctly by running the hello-world
image.

$ sudo docker run hello-world

This command downloads a test image and runs it in a container. When the
container runs, it prints an informational message and exits.

Docker CE is installed and running. The docker group is created but no users
are added to it. You need to use sudo to run Docker commands.
Continue to Post-installation steps for Linux
to allow non-privileged users to run Docker commands and for other optional
configuration steps.

Upgrade Docker CE

To upgrade Docker CE, download the newer package file and repeat the
installation procedure, pointing to the new file.

Install using the convenience script

Docker provides convenience scripts at get.docker.com
and test.docker.com for installing edge and
testing versions of Docker CE into development environments quickly and
non-interactively. The source code for the scripts is in the
docker-install repository.
Using these scripts is not recommended for production
environments, and you should understand the potential risks before you use
them:

The scripts require root or sudo privileges to run. Therefore,
you should carefully examine and audit the scripts before running them.

The scripts attempt to detect your Linux distribution and version and
configure your package management system for you. In addition, the scripts do
not allow you to customize any installation parameters. This may lead to an
unsupported configuration, either from Docker’s point of view or from your own
organization’s guidelines and standards.

The scripts install all dependencies and recommendations of the package
manager without asking for confirmation. This may install a large number of
packages, depending on the current configuration of your host machine.

The script does not provide options to specify which version of Docker to install,
and installs the latest version that is released in the “edge” channel.

Do not use the convenience script if Docker has already been installed on the
host machine using another mechanism.

This example uses the script at get.docker.com to
install the latest release of Docker CE on Linux. To install the latest
testing version, use test.docker.com instead. In
each of the commands below, replace each occurrence of get with test.

Warning:

Always examine scripts downloaded from the internet before
running them locally.

If you would like to use Docker as a non-root user, you should now consider
adding your user to the “docker” group with something like:

sudo usermod -aG docker your-user

Remember to log out and back in for this to take effect!

Warning:

Adding a user to the “docker” group grants them the ability to run containers
which can be used to obtain root privileges on the Docker host. Refer to
Docker Daemon Attack Surface
for more information.

Docker CE is installed. It starts automatically on DEB-based distributions. On
RPM-based distributions, you need to start it manually using the appropriate
systemctl or service command. As the message indicates, non-root users can’t
run Docker commands by default.

Upgrade Docker after using the convenience script

If you installed Docker using the convenience script, you should upgrade Docker
using your package manager directly. There is no advantage to re-running the
convenience script, and it can cause issues if it attempts to re-add
repositories which have already been added to the host machine.

Uninstall Docker CE

Uninstall the Docker CE package:

$ sudo apt-get purge docker-ce

Images, containers, volumes, or customized configuration files on your host
are not automatically removed. To delete all images, containers, and
volumes: